Display screen with a graphical user interface



The FIGURE is a front view of a display screen with a graphical user interface showing the new design.

The broken line showing a display screen, and all other broken lines showing portions of the graphical user interface, illustrate portions of the article. None of the aforementioned broken line subject matter forms part of the claimed design. 

CLAIM The ornamental design for a display screen with a graphical user interface, as shown and described. 